• NAT44
    sometimes used to indicate mapping between two IPv4 addresses; this is the typical case while IPv4 is the majority of traffic on the Internet.
  • NAT64
    refers to the mapping of an IPv4 address to an IPv6 address or vice versa. Example: Cloudflare IPv6 to IPv4 service.


Network Address Translation is an Internet standard that allows hosts on local area networks to use one set of IP addresses for internal communications and another set of IP addresses for external communications.
NAT is a feature of a router that will translate IP addresses. When a packet comes in, it will be rewritten in order to forward it to a host that is not the IP destination. As traffic passes from the local network to the Internet, the source address in each packet is translated on the fly from a private address to the public address by the virtual network router. The router also stores temporary basic connection tracking data which is used to determine the internal IP when a reply returns to the router.

When the LowEndspirit VPS is created it is assigned a private IPv4 address. The virtual network switch then opens 20 ports on the external IP to the created VPS. These portnumbers are the same on the external IP as on the internal IP.

The assignment of port numbers are automatic and follows a predefined schema calculated on the octet of the internal address.

192.168.0.3 has the following port range forwarded: 301 - 320
192.168.0.13 has the following port range forwarded: 1301 - 1320
10.10.10.33 has the following port range forwarded: 3301 - 3320
192.168.0.133 has the following port range forwarded: 13301 - 13320
10.10.10.7 has the following port range forwarded: 701 - 720
192.168.0.17 has the following port range forwarded: 1701 - 1720
10.10.10.221 has the following port range forwarded: 22101 - 22120